Lib/test/test_ioctl.py

   1 import unittest
   2 from test_support import TestSkipped, run_unittest
   3 import os, struct
   4 try:
   5     import fcntl, termios
   6 except ImportError:
   7     raise TestSkipped("No fcntl or termios module")
   8 if not hasattr(termios,'TIOCGPGRP'):
   9     raise TestSkipped("termios module doesn't have TIOCGPGRP")
  10
  11 class IoctlTests(unittest.TestCase):
  12     def test_ioctl(self):
  13         pgrp = os.getpgrp()
  14         tty = open("/dev/tty", "r")
  15         r = fcntl.ioctl(tty, termios.TIOCGPGRP, "    ")
  16         self.assertEquals(pgrp, struct.unpack("i", r)[0])
  17
  18     def test_ioctl_mutate(self):
  19         import array
  20         buf = array.array('i', [0])
  21         pgrp = os.getpgrp()
  22         tty = open("/dev/tty", "r")
  23         r = fcntl.ioctl(tty, termios.TIOCGPGRP, buf, 1)
  24         self.assertEquals(r, 0)
  25         self.assertEquals(pgrp, buf[0])
  26
  27 def test_main():
  28     run_unittest(IoctlTests)
  29
  30 if __name__ == "__main__":
  31     test_main()